Features:
Original game, no emulation involved.
Tons of bug fixes.
Runs on Windows and Linux.
Basic modding support (https://www.youtube.com/watch?v=qfqkb58pVJo).

You gonna need original PSX CD (it's relatively cheap and easy to find on ebay).

Reviews:
https://www.youtube.com/watch?v=n6D5anxa78A
https://www.youtube.com/watch?v=GdrlSDe1h3I

https://github.com/OpenDriver2/REDRIVER2

I guess it counts as source port?
Still, great find! Thanks for sharing!

That statement is arguable in a funny way :)
I mean... there was no actual source code code available and it was re-assembled from scratch.